package service;

import service.impl.UserServiceImpl;
import vo.Users;
import java.util.List;

public interface UserService {
    static UserService getInstance(){
        return new UserServiceImpl();
    }
    Users userLogin(Users users);

    List<Users> queryUserList(String userName);

    int insertUser(Users users);

    int deleteUser(int id);

    Users queryUserById(int id);
}
